⚛️ Category

hep-ex

1472 papers

Hep-Ex explores the fascinating intersection where particle physics meets experimental reality. This field investigates how scientists build massive detectors and accelerate particles to test the fundamental laws of nature, turning abstract theories into measurable data. It is the rigorous process of searching for new particles or forces that could reshape our understanding of the universe, often requiring years of collaboration and engineering.

At Gist.Science, we ensure these discoveries become accessible to everyone. We process every new preprint in this category directly from arXiv, generating both plain-language explanations for curious readers and detailed technical summaries for specialists. Our goal is to bridge the gap between complex experimental results and public understanding without losing scientific nuance.

Below are the latest papers in Hep-Ex, freshly summarized and ready for you to explore.

Pushing the Limits of Pulse Shape Discrimination in a Large Liquid Xenon Detector

This paper presents an optimized analysis framework for Pulse Shape Discrimination (PSD) in the LUX-ZEPLIN (LZ) experiment that, when combined with charge-to-light measurements into a two-factor discrimination method, significantly reduces electronic recoil background leakage and false positive rates in the search for dark matter.

D. S. Akerib, A. K. Al Musalhi, F. Alder, B. J. Almquist, C. S. Amarasinghe, A. Ames, T. J. Anderson, N. Angelides, H. M. Araújo, J. E. Armstrong, M. Arthurs, A. Baker, S. Balashov, J. Bang, J. W. Bar (…)2026-03-31⚛️ hep-ex

Isolation of photon-nuclear interaction backgrounds in the search for the chiral magnetic effect in relativistic heavy-ion collisions

This study quantitatively assesses the contribution of coherent photon-nuclear interactions, driven by strong electromagnetic fields in relativistic heavy-ion collisions, as a distinct background source that mimics chiral magnetic effect signals to improve the precision of separating genuine CME signals from background noise.

Jing Gu, Jinhui Chen, Jie Zhao2026-03-31⚛️ nucl-ex

Construction and characterization of a muon trigger detector for the PSI muEDM experiment

This paper presents the design, construction, and beam test results of the Muon Trigger Detector (MTD) for the PSI muEDM experiment, demonstrating through experimental data and Geant4 simulations that the system successfully identifies storable muons to enable a sensitivity improvement of over three orders of magnitude in the muon electric dipole moment measurement.

Guan Ming Wong, Tianqi Hu, Samip Basnet, Chavdar Dutsov, Siew Yan Hoh, David Höhl, Xingyun Huang, Timothy David Hume, Alexander Johannes Jäger, Kim Siang Khaw, Meng Lyu, Ljiljana Morvaj, Jun Kai Ng, A (…)2026-03-31⚛️ hep-ex

Magnetic moments of open bottom--charm molecular pentaquark octets

This paper presents a comprehensive theoretical calculation of the magnetic moments for open heavy-flavor (bcˉb\bar{c} and cbˉc\bar{b}) molecular pentaquark octets within a constituent quark model, revealing distinct electromagnetic signatures that differentiate between symmetric and antisymmetric light-diquark configurations and provide crucial benchmarks for identifying these states in future experiments.

Halil Mutuk, Xian-Wei Kang2026-03-31⚛️ nucl-ex

Measurement of CP asymmetries in B‾0→Ds−D+\kern 0.18em\overline{\kern -0.18em B}^0 \to D_s^- D^+ and B‾s0→Ds+D−\kern 0.18em\overline{\kern -0.18em B}_s^0 \to D_s^+ D^- decays

Using 9 fb−1^{-1} of proton-proton collision data from the LHCb experiment, this paper presents the first measurement of the CP asymmetry in B‾s0→Ds+D−\kern 0.18em\overline{\kern -0.18em B}_s^0 \to D_s^+ D^- decays and the most precise measurement to date for B‾0→Ds−D+\kern 0.18em\overline{\kern -0.18em B}^0 \to D_s^- D^+ decays, with both results being consistent with CP symmetry.

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb, C. Abellan Beteta, F. Abudinén, T. Ackernley, A. A. Adefisoye, B. Adeva, M. Adinolfi, P. Adlarson, C. Agapopoulou, C. A. Aidala, Z. Ajaltouni, S. A (…)2026-03-31⚛️ hep-ex

Observation of Λc+→nπ+η\Lambda^+_c\to n\pi^+\eta and search for Λc+→na0(980)+\Lambda^+_c\to na_0(980)^+

Using 6.1 fb−1^{-1} of data from the BESIII detector, this study reports the first observation of the decay Λc+→nπ+η\Lambda_c^+\to n\pi^+\eta with a significance of 9.5σ9.5\sigma, measures its branching fraction relative to Λc+→Λπ+η\Lambda_c^+\to \Lambda\pi^+\eta, and sets an upper limit on the intermediate process Λc+→na0(980)+\Lambda_c^+\to na_0(980)^+ while employing a Transformer-based deep learning approach for background suppression.

BESIII Collaboration, M. Ablikim, M. N. Achasov, P. Adlarson, X. C. Ai, C. S. Akondi, R. Aliberti, A. Amoroso, Q. An, Y. H. An, Y. Bai, O. Bakina, Y. Ban, H. -R. Bao, X. L. Bao, V. Batozskaya, K. Begz (…)2026-03-31⚛️ hep-ex

Sensitivity enhancement techniques for cryogenic calorimeters in the NUCLEUS experiment

This paper presents two complementary sensitivity enhancement techniques for the NUCLEUS experiment's cryogenic calorimeters—operating point optimization and two-dimensional optimum filter analysis—which, when combined, achieved a baseline energy resolution of 2.94 ± 0.05 eV using a CaWO4 detector.

M. Cappelli, A. Wallach, H. Abele, G. Angloher, B. Arnold, M. Atzori Corona, A. Bento, E. Bossio, F. Buchsteiner, J. Burkhart, F. Cappella, N. Casali, R. Cerulli, A. Cruciani, G. Del Castello, M. del (…)2026-03-31⚛️ nucl-ex

Exclusive Hadron Observables in Neutrino Induced 2p2h2p2h Multinucleon Knockout

This paper investigates exclusive hadron observables in neutrino-induced 2p2h2p2h multinucleon knockout by comparing kinematic variables from the Valencia model with current event generator treatments and nuclear re-scattering effects, while assessing their detectability in present and future long-baseline neutrino experiments.

Vedantha Srinivas Kasturi, Juan Nieves, Federico Sánchez, Joanna Ewa Sobczyk2026-03-31⚛️ hep-ex